refactor(i18n): 统一登录页国际化文案，移除重复的login键值

将全局common.js里重复的login: '登录/注册'移除，调整到对应语言的登录页配置中，统一多语言文案展示

lang/en-us/common.js

@@ -216,7 +216,6 @@ export const lang = {
 
 	getDynacode: 'Get Code',
 
-	login: 'Login/Register',
 	loginTips: 'Click to login and enjoy more exciting information',
 	toLogin: 'Go to login',
 	toGoodsCategoryPage: 'Go shopping',

lang/en-us/login/login.js

@@ -4,7 +4,7 @@ export const lang = {
 	mobileLogin: 'Mobile Login',
 	accountLogin: 'Account Login',
 	autoLogin: 'One-Click Authorization Login',
-	login: 'Login',
+	login: 'Login/Register',
 	mobilePlaceholder: 'Mobile login is only for mainland China users',
 	dynacodePlaceholder: 'Please enter dynamic code',
 	captchaPlaceholder: 'Please enter verification code',